Smartphone stand



FIG. 1 is a front, top perspective view of a smartphone stand showing my new design;

FIG. 2 is a rear, bottom perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a front and top perspective view thereof, showing the foldable part in a closed position.

The broken lines in the figures depict portions of the smartphone stand that form no part of the claimed design. 

CLAIM The ornamental design for a smartphone stand, as shown and described. 